function flipImg(img) {
    var src = img.src;
    
    if(src.indexOf("_1") > 0)
        src = src.replace("_1", "_2");
    else
        src = src.replace("_2", "_1");
        
    img.src = src;
}

var TimeOut         = 100;
var currentLayer    = null;
var currentitem     = null;
var currentLayerNum = 0;
var noClose         = 0;
var closeTimer      = null;

function mopen(n) {
  var l  = document.getElementById("menu"+n);
  var mm = document.getElementById("mmenu"+n);
	
  if(l) {
    mcancelclosetime();
    l.style.display='block';
    if(currentLayer && (currentLayerNum != n))
      currentLayer.style.display='none';
    currentLayer = l;
    currentitem = mm;
    currentLayerNum = n;			
  } else if(currentLayer) {
    currentLayer.style.display='none';
    currentLayerNum = 0;
    currentitem = null;
    currentLayer = null;
 	}
}

function mclosetime() {
  closeTimer = window.setTimeout(mclose, TimeOut);
}

function mcancelclosetime() {
  if(closeTimer) {
    window.clearTimeout(closeTimer);
    closeTimer = null;
  }
}

function mclose() {
      if(currentLayer && noClose!=1)   {
        currentLayer.style.display='none';
        currentLayerNum = 0;
        currentLayer = null;
        currentitem = null;
      } 
      else {
        noClose = 0;
      }
      currentLayer = null;
      currentitem = null;
  
//  }
}

document.onclick = mclose;